leatherique has worked well on my bamboo beige.
you put the conditioner on first.this works best in hot weather.then,after it has soaked in,you follow up with the cleaner.it's expensive,but i think it's worth it.
there are lots of threads on it-here's one
~ 2OO8 E90 M3 /// INTERLAGOS BLUE w/BAMBOO BEIGE, CARBON LEATHER / 6MT / 19" 220M FORGED WHEELS / PREMIUM / MOONROOF / IPOD / BSW SPEAKERS ~
~EVERYTHING IN MODERATION,INCLUDING MODERATION ~